Our Applet connects via JDBC to a MySQl Database Server.
The customer has a Mircosoft ISA Firewall between the client Computer and the MySQL Server. On the client computer a ISA Firewall Client opens the port 3306 in the Firewall if a Winsock Application tries to connect to the server. This works well with java 6 but it doesent work with java 7 ("Communication link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.").
Has anybody an idea to solve the problem without downgrading the jre?